The bricklayer

The bricklayer built a six-meter base of the fence in 3 hours. How long does it take to build a 14 m long base?

Correct answer:

t =  7 h

Step-by-step explanation:

$$\begin{gathered} a=6\text{ m } \\ b=14\text{ m } \\ {t}_1=3\text{ h } \\ t=t_1\cdot {\displaystyle \frac{b}{a}}=3\cdot {\displaystyle \frac{14}{6}}=7\text{ h} \end{gathered}$$

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